The following highways are numbered 17J:
New York State Route 394 (NY 394) is a state highway located within Cattaraugus and Chautauqua counties in southwestern New York in the United States. Its western terminus is located on the shore of Lake Erie at an intersection with NY 5 in the Westfield hamlet of Barcelona. The eastern terminus is located at an interchange with the Southern Tier Expressway at the Coldspring hamlet of Steamburg. From Mayville to Jamestown, NY 394 follows the western edge of Chautauqua Lake. East of Jamestown, the route straddles the Southern Tier Expressway and connects to the highway in four different locations, including at its eastern terminus.
New York State Route 474 (NY 474) is a state highway located entirely within Chautauqua County in the westernmost corner of New York in the United States. It begins at the section of the Pennsylvania state line that runs north–south and runs eastward, initially paralleling the state line before taking a more northeasterly alignment toward Chautauqua Lake. The route ends adjacent to the lake at a junction with NY 394 in the town of Busti. NY 474 was originally designated as New York State Route 74 in 1930 before being renumbered to NY 474 on July 1, 1972. The route continues westward into Pennsylvania as Pennsylvania Route 474 (PA 474), which was assigned in the 1980s.
